Jaime Vives Piqueres wrote:
> On Tue, 15 Apr 2003 20:07:14 +1000
> Edward Coffey <eco### [at] alphalinkcomau> wrote:
> 
> 
>>Now my method: Same up to where the friend complains, then you remedy 
>>the situation leaving assumed_gamma alone and changing display_gamma 
>>from 1.8 to 2.2. This creates a brighter image and your friend can see
>>the wallpaper just fine.
> 
> 
>   Yes, but you can also set assumed_gamma to 1.8/2.2 to achieve the same
> effect without having to alter your povray.ini, if I read well the
> manual.

Starting from an assumed_gamma value of 1 and a display_gamma of 1.8 on 
a system with gamma of 1.8 you could change assumed_gamma to 1.8/2.2 
(approximately 0.82) to have the image display correctly on a gamma 2.2 
machine if you were dead set against altering your display_gamma, but 
why bother? The POV-Ray gamma features allow you to do it all easily - 
set assumed_gamma to 1, set display_gamma to whatever your system's 
gamma is. When rendering for display on a different system, set 
display_gamma to whatever that system's gamma is, then set it back again 
when the render is finished. What could be simpler?

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